Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    17/05/2026, 21:30

General

  • Target
    2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe
  • Size 42KB
  • Sample260517-1cpe4ac141
  • SHA256 b556d25f9ee152a6e1c3bfb18b7fb74acf8ecf6909a87beda726fc63ef57dfa9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:412
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2708

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        hasfj.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
        • Size 42KB
        • SHA256 412e5656a8399bc040133bfd00d38263fe2e051a4f0266807d4ca57a85b8b2fe
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/412-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/412-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

        memory/412-2-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/412-3-0x0000000002200000-0x0000000002206000-memory.dmp

        memory/2708-17-0x0000000008000000-0x000000000800A000-memory.dmp

        memory/2708-20-0x0000000002240000-0x0000000002246000-memory.dmp

        memory/2708-19-0x0000000008000000-0x000000000800A000-memory.dmp